Размещено 4 года назад по предмету
Английский язык
от inessamancheva
Make questions beginning with how long or since when:
1. We have been working at this problem for two years.
2. Students have been considering the examination requirements since 9 o'clock.
3. They have been writing an essay for three hours.
4. He has been carrying out experiments for a fortnight.
5. She had been taking English lessons since childhood.
6. They have been translate the article for two hours now.
7. Local authorities have been trying to curb pollution for years.